Free browser tools for everyday tasks
kokonamu | Everyday useful tools
kokonamu collects free web tools for character counting, date calculation, tax calculation, image resizing, QR code generation, and more.
Tools
Frequently used tools
Small utilities that show results as soon as you type.
Character Count
Count total characters, characters without spaces, lines, words, and bytes for pasted text in one place. It works well for essays, profile text, contact forms, and social posts, and the text stays in your browser instead of being sent to a server.
QR Code Generator
Create QR codes from URLs or plain text, then adjust size, foreground color, background color, quiet zone, and error correction before downloading a PNG. It is useful for flyers, cards, posters, and web sharing, and everything runs locally in your browser.
URL Formatter
Complete, clean, encode, decode, sort query parameters, normalize trailing slashes, and remove tracking parameters from one or many URLs at once. It is designed for share-ready links and development checks, and it processes your input locally in the browser.
Remove Line Breaks
Remove unwanted line breaks, replace them with spaces, or delete blank lines from text copied out of PDFs, emails, notes, and web pages. It helps turn broken text into readable paragraphs, and the pasted content is processed only in your browser.
Date Calculator
Calculate dates before or after a chosen day, measure the difference between two dates, and count business days while skipping weekends or Japanese public holidays from bundled data. It is useful for deadlines, contracts, travel planning, and quick schedule checks in the browser.
Age Calculator
Calculate full age from your date of birth in your browser, plus Japanese era names, a simple year-based zodiac animal, a star sign from month and day, child-style month counts under six, day-count milestones, days until a chosen adulthood age (18 or 20), and a multi-person table with copyable text. Nothing is sent to a server.
Services
Simple group attendance management with one URL.
attendly is a service for managing event attendance by group. It keeps the flow short for both event organizers and participants.
Make small tasks shorter
Handle quick checks around text, URLs, dates, prices, images, and QR codes in one place.
Open tools